Re: DEVFSv50 and /dev/fb? (or /dev/fb/? ???)
Kragen (kragen@pobox.com)
Mon, 10 Aug 1998 09:44:32 -0400 (EDT)
On Mon, 10 Aug 1998, Mike Jagdis wrote:
> On Fri, 7 Aug 1998, Albert D. Cahalan wrote:
> > How would an anti-devfs person support USB? Remember, the whole system
> > is dynamic. You can add and remove devices on a live system. You can
> > have several devices of the same type, there is no adjustable ID like
> > SCSI has... It will put you through hell.
>
> It seems pretty obvious that USB devices must have some way of
> uniquely identifying a particular unit otherwise you couldn't
> differentiate between, say, two USB hard disks on the same bus.
Yes. The unique identification is created when you plug the device in,
though.
> It also seems obvious that a USB device driver would have to
> make this information accessible to the user in some way.
No, not necessarily. The "identification" is a control connection,
roughly equivalent to a TCP connection.
Kragen
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